- What Is a WA-HI, Exactly?
- Who Administers the WA-HI and Why It Exists
- What's Actually Tested on the State Portion
- Exam Format, Timing, and Scoring
- Fees and the Full Licensing Path
- Eligibility and Education Requirements
- The Reciprocity Route
- Test-Day Mechanics You Need to Know
- Who Hires WA-HI Licensed Inspectors
- Keeping Your License Active
- Building a Study Plan Around the State Law Content
- Frequently Asked Questions
- WA-HI is the Washington-specific state portion of home inspector licensing, administered through PSI Services for the DOL.
- The state exam has 24 questions with a one-hour limit, plus possible unscored experimental items.
- Passing requires a scaled score of 70 - not 70% correct answers.
- Content comes directly from RCW 18.280, RCW 18.235, and WAC 308-408, 308-408A, 308-408B, and 308-408C.
What Is a WA-HI, Exactly?
"WA-HI" refers to the Washington Home Inspector Licensing Exam - specifically the Washington state-portion of the exam that home inspector candidates in Washington must pass before they can legally practice. It is not a national credential, a designation issued by a private trade association, or a certificate you frame and hang on a wall by itself. It is a state-law competency exam that verifies you understand Washington's home inspector statutes and administrative rules well enough to practice under them.
The WA-HI exists alongside a separate national-portion exam. If you're pursuing initial licensure for the first time, you need both. If you already hold an equivalent license elsewhere and qualify for reciprocity, or if you're retaking only the state-specific content, the WA-HI state portion may be all that stands between you and a Washington license.
Who Administers the WA-HI and Why It Exists
The Washington State Department of Licensing (DOL) sets the licensing requirements, and PSI Services delivers the actual computer-based exam. The candidate bulletin governing current test content was authored by PSI and dated December 10, 2024. Because Washington periodically updates its home inspector statutes and rules - including amendments to definitions and standards effective August 7, 2026 - the exam content is tied to whichever legal version is current, which is a separate date from when the bulletin itself was published.
This distinction matters more than it sounds. A candidate studying an outdated summary of WAC 308-408 could walk in prepared for rules that no longer apply. If you want a full breakdown of exactly what's covered and how weighting works across the current bulletin, the WA-HI Exam Domains Guide walks through the content areas in more depth.
What's Actually Tested on the State Portion
Unlike a general inspection-skills exam, the WA-HI state portion is built entirely around Washington statutes and administrative code. There is no plumbing diagram interpretation or roofing-material identification here - that's national-portion territory. The state portion asks: do you know the legal framework you're operating inside?
RCW 18.280 - Home Inspector Licensing Law
Covers the core statutory requirements for who must be licensed, what counts as a home inspection under Washington law, and the legal boundaries of the profession.
- Licensing prerequisites and legal definitions
- Scope of practice as defined by statute
RCW 18.235 - Uniform Regulation of Business and Professions Act
Governs disciplinary processes, unprofessional conduct, and the DOL's authority to enforce licensing law across regulated professions, including home inspectors.
- Grounds for disciplinary action
- DOL enforcement authority
WAC 308-408 and 308-408A - Definitions and Standards
These rules define inspection terminology and lay out the standards of practice inspectors must follow, including what must and must not be included in a written report.
- Definitions used throughout the licensing framework
- Standards of practice for conducting and reporting inspections
WAC 308-408B and 308-408C - Procedural and Administrative Rules
Address the administrative mechanics of licensing, education requirements, and related procedural rules candidates are expected to know cold.
- Education and field-training procedural requirements
- Administrative compliance details
For a deep, section-by-section content breakdown mapped to these code sections, see the WA-HI Exam Domains Guide, and pair it with the WA-HI Cheat Sheet for quick recall of the must-know statutory points.
Exam Format, Timing, and Scoring
The WA-HI state portion is a computer-based, closed-book, multiple-choice exam. Per the PSI-authored candidate bulletin, candidates face 24 state-specific questions with one hour allotted. Some unscored experimental items may also appear, which means the exam you sit may feel slightly longer than 24 questions worth of content, though only the scored items count toward your result.
Key Takeaway
Passing requires a scaled score of 70 - not 70% of questions answered correctly. Scaled scoring means the raw number of correct answers needed can shift depending on question difficulty calibration, so don't try to reverse-engineer "how many I can miss." For the full explanation of how scaled scoring works, read the WA-HI Passing Score breakdown.
Because the scoring model isn't a simple percentage, many candidates underestimate how demanding a 24-question exam can be. Fewer questions means less room to recover from careless mistakes on statute-specific details. If you're trying to gauge realistically how tough this exam is relative to your background, How Hard Is the WA-HI Exam? covers that in detail, and WA-HI Pass Rate discusses what's known about outcomes.
Fees and the Full Licensing Path
Money matters here, and the fee structure is specific:
| Item | Cost |
|---|---|
| State-only exam fee | $125 |
| National-only exam fee | $250 |
| Combined exam fee (state + national) | $300 |
| Original licensure cost | $720 |
| License renewal | $415 (plus 24 CE hours) |
Notice that the combined fee ($300) is less expensive than paying state-only and national-only separately ($125 + $250 = $375), which is worth factoring into your timeline if you're a first-time applicant needing both portions. For a complete pricing breakdown including where these fees fit into the bigger licensing picture, see WA-HI Certification Cost.
Eligibility and Education Requirements
Before you can sit for the WA-HI, you need to meet Washington's baseline eligibility rules. Applicants must be at least 18 years old, and the standard education route requires:
- 120 approved classroom hours of home inspector education
- 40 actual-site field-training hours, involving at least five complete inspections
- Supervision by an inspector who has held a license for at least four years
- Written reports produced for each supervised inspection
One detail that trips people up: travel time, meal breaks, and report-writing time do not count toward the 40 field-training hours - only the actual on-site inspection work does. Additionally, your education and field training must be completed within two years before you submit your examination application, so timing your coursework matters as much as completing it. The WA-HI Requirements guide lays out every prerequisite in sequence if you're mapping out your path from scratch.
The Reciprocity Route
Not every candidate comes in cold through the standard education track. DOL-approved reciprocity candidates can qualify differently: if you've been licensed and actively practicing in good standing for two of the previous four years in a jurisdiction whose requirements meet or exceed Washington's, you may bypass the standard education route and focus your prep on the state-portion exam itself. This is one of the more common paths for experienced inspectors relocating to Washington from another state with a comparable licensing framework.
Test-Day Mechanics You Need to Know
The exam is delivered as closed-book, and you can take it either at a physical PSI test center or via remote proctoring - but the two delivery modes aren't identical in what's allowed:
- Matching photo and signature identification is required regardless of delivery method
- Physical calculators are permitted at test centers, but not in remote-proctored sessions
- Remote scratch paper and remote breaks are prohibited
Current PSI appointment instructions ultimately govern availability and permitted materials, so confirm details before your scheduled date rather than relying on memory of a past exam experience. If you need help mapping out when to schedule relative to your education completion and application windows, WA-HI Exam Dates covers testing windows and deadlines in detail.
Who Hires WA-HI Licensed Inspectors
A Washington home inspector license opens the door to independent practice, employment with established inspection firms, and work alongside real estate transactions across the state. Because licensure is a legal requirement to perform home inspections for compensation in Washington, the WA-HI credential isn't optional networking polish - it's the gate you must pass through to legally operate at all. Many licensees build client bases through referral relationships with real estate agents, while others join multi-inspector firms that handle higher transaction volume.
If you're weighing whether the investment of time and the $720 original licensure cost pays off relative to your career goals, Is the WA-HI Certification Worth It? and the WA-HI Salary Guide both dig into the return-on-investment side of the decision. You can also explore current openings and typical role expectations through resources like WA-HI Jobs.
Keeping Your License Active
Passing the WA-HI and getting licensed isn't the finish line - Washington home inspector licenses run on a two-year birthday cycle, initially expiring on your second birthday after issuance. Renewal costs $415 and requires 24 approved continuing education hours. Missing renewal deadlines can put your ability to legally practice at risk, so many licensees track their CE hours well ahead of their renewal window rather than scrambling near the deadline.
Building a Study Plan Around the State Law Content
Because the WA-HI state portion is legal-content-driven rather than skills-based, generic exam-prep habits only get you partway. What actually moves the needle is systematically working through RCW 18.280, RCW 18.235, and the four WAC chapters until the definitions, procedural rules, and disciplinary provisions are second nature - not memorized in isolation, but understood in context of how they interact.
Statutory Foundation
- Read RCW 18.280 in full, noting licensing definitions and scope-of-practice language
- Cross-reference RCW 18.235 for disciplinary and enforcement context
Rule-Level Detail
- Work through WAC 308-408 and 308-408A definitions and standards of practice
- Note where written-report requirements are specified
Administrative Mechanics
- Review WAC 308-408B and 308-408C procedural rules
- Practice recalling fee amounts, timelines, and renewal cycle details
Simulated Practice
- Take timed practice sessions matching the 24-question, one-hour format
- Review missed items against the specific code section they came from
For a structured walkthrough of this exact approach with more detail on pacing and review technique, the WA-HI Study Guide 2026 expands on each phase. And because the scored exam is short, practicing under realistic timed conditions on our practice test platform before test day helps you get comfortable with the pacing rather than discovering it live under the clock.
Frequently Asked Questions
No. The WA-HI is the Washington state-portion only. First-time licensure candidates also need to pass a separate national-portion exam.
The current bulletin lists 24 scored state questions with one hour allowed, though additional unscored experimental items may also appear on your form.
You need a scaled score of 70. This is not the same as answering 70% of questions correctly - scaled scoring accounts for question difficulty.
Only through the DOL-approved reciprocity route, which requires having been licensed and actively practicing in good standing for two of the previous four years in a qualifying jurisdiction.
Exam-application approval lasts six months, and once you pass, your results remain valid for one year for licensure purposes.
Understanding what the WA-HI is - and isn't - is the first real step toward passing it. Once you've internalized that this is a state-law exam covering RCW 18.280, RCW 18.235, and the WAC 308-408 series, the rest becomes a matter of disciplined review and realistic timed practice on a practice platform built around the same format you'll see on test day.